Improvement in apparatus for heating buildings by steam



A. S. PELTON.

Steam Heater.

Patented May 13, 1856.

N. PETER 5. Pmmmhe n hur, Wflshinglnn. D. c.

PATENT FFICE.

A. S. PELTON, OF CLINTON, CONNECTICUT.

IMPROVEMENT IN APPARATUS FOR HEATING BUILDINGS BY STEAM.

Specification forming part of Letters Patent No. 14,885, dated May 13, 1856.

To all whom it may concern.-

Be it known that I, A. S. PELTON, of Olinton, in the county of Middlesex and State of Connecticut, have invented a new and useful Improvement in Apparatus for Warming Buildings by Steam; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, forming part, of this specification, in which- Figure 1 is an elevation of apparatus, showing in section the annular chamber communicating with boiler and radiator. Fig. 2 is an elevation of apparatus, showing operation of steam-regulator; Fig. 3, a sectional view of valve-regulator.

Similar characters of reference in the several figures denote the same part of the apparatus.

The nature of my invention consists in the construction of the apparatus with an annular chamber surrounding the fire and constituting a portion of the channel from the boiler to the radiators for effecting the double purpose of warming the air in the radiators previous to the generation of steam and superheating the steam during its passage through it, the details of construction and operation being as follows:

In the drawings, A is the furnace with flues surrounding the boiler, so that the heat may be imparted thereto from the heated current previous to its exit at flue a. This portion of the apparatus, being independent of the invention here considered, need not be definitely set forth. This boiler is fed by chamber B through pipe b, as described in patent obtained by me dated October 9, 1855.

O is the radiator, communicating by pipe 0 with chamber B for return of condensation to the boiler.

D is an annular chamber inthe lower portion of the furnace and surrounding the fire. This chamber communicates by pipe 01 with the upper portion of the boiler, and by pipe 6 with the radiator, so as to form a portion of the channel from the boiler to the radiator.

In communication with the steam portion of the boiler is the tube 2', surrounded by a chamber f. The space in this chamber between the convex surface of tube 2' and concave surface of chamber f is filled with mercury and the covered tube m inserted therein, so as to embrace the inner tube 2, as shown in Fig. 3.

The top of tube on terminates in a rod h, which is connected with a lever Z, as shown in Figs. 1 and 2. This lever is connected with damper-pin flue a and with cockn of returnpipe 0, so as by the rising of tube m to close the damper p and open cock n. This lever l is regulated by an adjustable Weight to sustain any required pressure of steam before moving. When that limit is exceeded, the tube m will rise by the direct action of the steam and carry with it the lever, with the effect above stated. The mercury in chamber f'prevents the escape of steam between the tubes.

The action of chamber D is as follows: Be-

fore the generation of steam the chamber becomes heated, and the air contained therein rises through pipe 6 to the radiator, gradually Warming the same previous to the entrance of steam therein. This Warming of the radiators by hot air causes the effect of the furnace to be felt in the apartment sooner than it would be felt were the generation of steam waited for, and, moreover, causes the radiators to fill with steam much quicker than when the steam has to enter cold radiators. When the steam is generated, it passes, as shown by arrows, through chamber D to the radiator,-and is superheated thereby. The cook a is opened by lever'l when the requisite pressure of steam is attained, permitting the escape of air from the radiator, and serving, also, as a safety-valve for the discharge of steam if the shutting of the damper 19 does not effect the reduction of steam-pressure. \Vhere there are many radiators, the pipe 0 communicates with all of them for discharge of air and escape of steam.

I claim The construction of the apparatus with an annular chamber D around the fire-pot and constituting a portion of the channel from the boiler to the radiator for warming the air in the radiators previous to the generation of steam, as and for the purposes set forth, the employment of this chamber as a mere superheater of the steam not being claimed as my invention.

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

A. S. PELTON.

VVitnesse's:

GEo. PATTEN, JOHN S. HOLLINGSHEAD. 

